add nextblock, 0slot support

jito_protos/README.md

@@ -0,0 +1,56 @@
+# Schemas
+
+This repository contains schemas for [grpc](#grpc) and [json rpc](#json-rpc) endpoints for Jito Lab's MEV system.
+
+## grpc
+
+The below explains how to use the public protobuf definitions for Jito Lab's MEV system.
+
+### Usage
+
+Add this repo as a git submodule to your repo. Here's an example file tree in a Rust codebase:
+
+```
+your-rust-repo/
+├─ src/
+│  ├─ gm/
+│  │  ├─ lib.rs
+│  ├─ jito-protos/
+│  │  ├─ protos/
+│  │  │  ├─ *.proto
+|  |  |─ src/
+|  |  |  |─ lib.rs
+|  |  |─ build.rs
+```
+
+```rust
+/// lib.rs
+
+pub mod proto_package {
+    tonic::include_proto!("proto_package.proto");
+}
+```
+
+```rust
+/// build.rs
+
+use tonic_build::configure;
+
+fn main() {
+    configure()
+        .compile(
+            &[
+                "protos/proto_package.proto",
+            ],
+            &["protos"],
+        )
+        .unwrap();
+}
+
+```
+
+If you are looking for inspiration, a sample client can be found at [searcher examples](https://github.com/jito-labs/searcher-examples)
+
+## json rpc
+
+[json rpc schema](json_rpc/http.md) explains how to use json rpc for Jito Lab's MEV system.